R3: High-pressure science and deep Earth’s material

[R3P-01] Measurements of local stress using TEM in-situ observation

*Akira MIYAKE¹, Yohei Igami¹, Toru Matsumoto¹, Satoko Motai³, Ryuichi Nomura² (1. Kyoto Univ. Sci., 2. Kyoto Univ., 3. Yamagata Univ.)

Keywords:electron microscope, in-situ experiment, nano-deformation

Extensive in-situ loading/ indentation experiments have been conducted inside a transmission electron microscope (TEM) to understand the nanomechanical properties of materials (e.g., Wang et al., 2015). In these studies, the stress on the sample were estimated just by dividing the applied load by the area loaded on and/or analyzed by the finite element method. In this study, we succeeded in measuring the stress state within a sample directly from the electron diffraction patterns of a deformed sample.